Mattress pad



FIG. 1 is a top plan view of a mattress pad showing my new design;

FIG. 2 is a right end elevational view of the mattress pad of FIG. 1, wherein the left end elevational view is a mirror image thereof;

FIG. 3 is a bottom plan view of the mattress pad of FIG. 1;

FIG. 4 is a front elevational view of the mattress pad of FIG. 1, wherein the rear elevational view is a mirror image thereof; and,

FIG. 5 is a enlarged fragmental perspective view of the left front corner of the mattress pad illustrating the three dimensional depth of the design. 

The ornamental design for a mattress pad, as shown and described. 